How about an active speaker setup like the NHT active's? Should give you a tremendous dynamic advantage and lack of coloration from no passive crossover, and good parts usage. I think they are like $8k with subwoofer, but cheaper used. Anyway, they're small, highly rated in Stereophile (Class A restricted???).
Otherwise, used, Revel Gem's, Wilson Cub's, Merlin VSM's (using a Rives PARC to EQ for your small room), Piega's, yada, yada, and similar smaller, freq restricted designs.
For other passive's, your gunna have to fish here....